KADARI, Halima, Abderrahmane OUMANSOUR, John R. GRAEF, and Abdelghani OUAHAB. 2024. “Existence of Positive Solutions to Impulsive Nonlinear Differential Systems of Second Order With Two-Point Boundary Conditions”. Studia Universitatis Babeș-Bolyai Mathematica 69 (3):639–649. https://doi.org/10.24193/subbmath.2024.3.10.